12 episodes Season 1 (zero filler), 12 episodes Season 2 (minor filler eps 8–9)

Watch Order

1
Season 1 (2015)12 Episodes · Madhouse

Saitama joins the Hero Association and faces the House of Evolution, Deep Sea King, and the alien invasion arc.

2
Season 2 (2019)12 Episodes · J.C. Staff

Hero Association vs Monster Association begins. Garou emerges as the central threat.

3
Season 3 (TBD)Confirmed

Will adapt the Monster Association arc conclusion — the most action-heavy arc in the manga.

Tips for New One Punch Man Viewers

About One Punch Man

Saitama trained so hard he lost all his hair and gained the ability to defeat any enemy with a single punch. Now he's a hero for fun — and completely unfulfilled because no fight challenges him. One P...

Filler Info

12 episodes Season 1 (zero filler), 12 episodes Season 2 (minor filler eps 8–9)

Power System

Understanding Physical Prowess / Hero Association Ranks deepens your experience.

After the Anime

Check the manga for story beyond the anime adaptation.